Do you know the formula to find the area of a circle? Do you know the value of pi? Do you know what the relationship is between diameter and radius? Yes? Then you can solve this problem. If your scholars don't know this formula then this...

Cut up a circle and make a parallelogram! What? No way! Yes way! Watch the instructor illustrate just how to cut up the circle and get that parallelogram to then get the formula for the area of a circle. It really works! Base,...

Here's a quick look at percentages as proportions. Percentages really are looking at numbers as a part of a whole, so it makes sense to look at it as a proportion. And how do you write proportion? You write proportions like a fraction,...

What number is 40% of 30? Learn the formula and be able to figure out all of the percent problems. The instructor demonstrates the basic formula. Then she shows how and where to plug in the numbers according to what the problem is asking...

First, identify the parts of the word problem. Next, identify the variable, decide what formula to use, figure out the quantities, insert the quantities into the equation, and now solve. There are many parts to solving this word problem...

Learners who view this video will gain a stronger understanding of percent of change. This tutorial provides a formula and a sample problem. As the tutor completes the example, she explains and clarifies each step that she takes to find...

I=prt is the formula for interest. What does each variable represent? I =interest, p =amount originally invested, r =rate of interest (usually in percent), t =time. Now all you have to do is plug in the numbers and do the calculations.

Sales tax always increases the price of your purchases. How can you figure out how much you'll be paying in full? Teach your class how to figure out their total cost, including sales tax, with this video. Using an example of a pair of...

Inflation and higher fuel costs means airplane tickets will cost more to the consumer. So here is a word problem that presents a real-world situation. Figure out the total price for an airplane ticket that has increased by 30% from the...

The instructor goes through the steps of how to solve for the value of a variable in a two-step equation.

The teacher demonstrates how to use the subtraction property of equality, applying it to both sides of the equation to find the solution.

The teacher demonstrates how to use the addition property of equality, applying it to both sides of the equation to find the solution.

Two equations, two unknown variables. Use the substitution method to solve for one of the variables. Then plug that value into one of the equations to solve for the other variable. Finally plug both values into one of the original...

Two equations. What's the solution to this system? How can you solve it? Can you write the two equations in slope-intercept form? Yes, you can. Now graph each equation. Look, the lines are parallel. What does that mean? That means there...

Goodness! There are a lot of steps in getting to the final solution in this word problem. Watch this video and follow along as the instructor explains each and every step. There's a scatter plot, a line of fit, writing an equation based...

Given a table of values, find the rate of change. First, set up the given table, and identify the values that will be used to calculate the change. Of course, there is a formula. So use the formula to solve the problem. Still confused?...

Given a linear equation, rewrite it in different forms. No matter what form a linear equation is given in, it can be converted to the other forms. So that means every linear equation can be written in standard form, point-slope form and...

What makes an expression an inequality? Well, it would be considered an inequality if the expression has a greater than symbol, a less than symbol, a greater than or equal to symbol, or a less than or equal to symbol. This would mean...

Check to see if a given ordered pair is a solution to an inequality. Just plug the given values into the given inequality and do the math. If the resulting statement is true then the given ordered pair is a solution. If the statement is...

This is not animation, it just looks that way. This brief explanation describes how to make a movie using PowerPoint and iMovie software. For individuals familiar with these tools, this clip could be a big help.

What are pinch harmonics? Learn how to do them and what they sound like with this video.

Due to the tsunami in Aceh, 25,000 children were left as orphans. A native Aceh woman returned to her hometown to open an orphanage to help homeless children. She founded the Give Light Foundation, which is hoping to open a second...

Learning games on the Internet are great resources to use in the classroom. However, make sure you research the games you allow your class to play. This video tells viewers why.

The largest recorded earthquake in Japan in the last 140 years triggered a tsunami in 2011. Live footage of the event was captured and is shown in this clip. The extensive damage is evident as water floods cities. In a social studies or...